Boyce,William E. (2015). Elementary Differential Equations and Boundary Value Problems (9th.). WILEY,NEW DELHI.
Lua i Stíl Chicago (17ú heag.)Boyce,William E. Elementary Differential Equations and Boundary Value Problems. 9th. WILEY,NEW DELHI, 2015.
Lua MLA (9ú heag.)Boyce,William E. Elementary Differential Equations and Boundary Value Problems. 9th. WILEY,NEW DELHI, 2015.
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